Acting on a tip-off, police yesterday raided a house at Raiwind, where Sharif's sprawling residence is located, and arrested the terror suspect. He was identified as Sajid Mushtaq.
Officials said weapons, grenades and scores of bullets were found in his possession.
"Mushtaq is a member of the Tehrik-e-Taliban Pakistan and was tasked to commit terror activities in Lahore," an official said.
The alleged terrorist was moved to an undisclosed location for interrogation.